Consider Two Carts,of Masses M and 2m,at Rest on a Frictionless

question 74

Multiple Choice

Consider two carts,of masses m and 2m,at rest on a frictionless air track.You push the first cart for 3 s and then the other for the same length of time and with the same force.The final speed of the cart with mass 2 m is

• A)one third the speed of the cart of mass m.
• B)one fourth the speed of the cart of mass m.
• C)one half the speed of the cart of mass m.
• D)the same as the cart of mass m.

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